Synthesis of phosphatidyl-β-glucosyl glycerol containing a dioleoyl diglyceride moiety
作者:C.A.A. van Boeckel、G.M. Visser、J.H. van Boom
DOI:10.1016/s0040-4020(01)82350-4
日期:1985.1
in a two step procedure, to afford compound ; (c) a 2,4-dichlorophenyl protected phosphatidic acid derivative . Compound could be selectively coupled to the primary hydroxyl function of to afford the fully protected glycophospholipid . Finally, removal of the 2,4-dichlorophenyl and TIPS protecting groups from was performed with syn-4-nitrobenzaldoximate and fluoride ions, respectively, to afford glycophospholipid
Synthesis, stereochemistry and cytotoxic activity of novel steroidal 16-spiro-1,3,2-dioxaphosphorinanes
作者:János Wölfling、Piroska Kovács-Pénzes、István Zupkó、Gyula Schneider、Éva Frank
DOI:10.1016/j.molstruc.2012.01.013
日期:2012.4
Abstract The epimeric pairs a and b of novel steroidal 16-spiro-dioxaphosphorinanes 4–8 were synthetized via the phosphorylation of 16,16-bis(hydroxymethyl)androst-4-ene-3,17-dione (2) and their stereostructures were investigated by NMR methods. The dioxaphosphorinane moiety exists mainly as one of the possible chair conformers or as a chair–twist equilibrium in solution as a consequence of the rigidity
摘要 通过 16,16-双(羟甲基)androst-4-ene-3,17-dione (2) 的磷酸化合成了新型甾体 16-spiro-dioxaphosphorinanes 4-8 的差向异构对 a 和 b,其立体结构为用核磁共振方法研究。由于甾烷骨架的刚性,二恶磷烷部分主要作为可能的椅子构象异构体之一或作为溶液中的椅子扭曲平衡存在。构象异构体的贡献很大程度上取决于 P 原子的构型和取代基的立体电子特性。结构相关产物的抗增殖活性在体外用 MTT 测定法对三种恶性人类细胞系(HeLa、MCF7 和 A431)进行了测定。
Phosphorylation of nucleoside derivatives with aryl phosphoramidochloridates
作者:J.H. van Boom、P.M.J. Burgers、R. Crea、W.C.M.M. Luyten、A.B.J. Vink、C.B. Reese
DOI:10.1016/0040-4020(75)80318-8
日期:1975.1
The preparation of three aryl phosphorocyclohexylamidochloridates (7a, 7b and 7c) and an aryl phosphoromorpholidochloridate (8) is described. These arylphosphoramidochloridates react with 2′,3′-O-methoxymethylene-uridine, -4-N-anisoylcytidine and -6-N-anisoyladenosine (9a, 9b and 9c, respectively), in the presence of the 1-ethylimidazole derivative (11a) to give high yields of the corresponding fully-protected
SYNTHESIS OF NUCLEOSIDE PHOSPHOTRIESTERS CONTAINING AMIDATE OR THIOATE FUNCTIONS
作者:Stan A. A. van Boeckel、Gijs van der Marel、Gerry Wille、Jacq H. van Boom
DOI:10.1246/cl.1981.1725
日期:1981.12.5
Phosphorylation of properly protected nucleosides with aryl or alkyl phosphorodichloridates, in the presence of 1-hydroxybenzotriazole, gives phosphorylated intermediates which react smoothly with different amine or thiol functions to afford the corresponding amidate or thioate phosphotriester derivatives.
Synthesis of phosphatidyl-α-glucosyl glycerol containing a dioleoyl phosphatidyl moiety. Application of the tetraisopropyldisiloxane-1,3-diyl (tips) protecting group in sugar chemistry. part III
作者:C.A.A. van Boeckel、J.H. van Boom
DOI:10.1016/s0040-4020(01)82349-8
日期:1985.1
demonstrate that the tetraisopropyldisiloxane-1,3-diyl protecting group could be introduced, in a two step procedure, at the 3'- and 4'-hydroxyl functions of α-glucosyldiglyceride 3 to give derivative 6. Compound 6 could be selectively condensed with a suitably protected phosphatidyl part 9 at its primary hydroxyl function to afford the protected glycophospholipid 10a. The phosphatidyl part 9 was obtained